The University of Arizona is an active member of the Open Education Network, which advances open education. Open educational resources (OER) are teaching, learning, and research resources in the public domain or released with an open license (e.g., Creative Commons license). Anyone can freely use, copy, adapt, and reshare OER. Opencontent.org states that true OER are free to access and allow for the 5R's of open content:
Retain: make, own, and control copies of the content
Reuse: use the content in a wide range of ways
Revise: adapt, adjust, modify, or alter the content itself
Remix: combine original or revised content with other material to create something new
Redistribute: share copies of the original content, revisions, or remixes with others
